I just installed these a few weeks ago. I got 2 80mm bolts and reused the 2 100 mm that came off the stock points because the bolts were $7.50 each locally. I saw other comments that said the 100's we're too long to fit but that is not correct. Make sure to get grade 10.9. Also double check the thread pitch. I believe they are fine thread 1.5, not coarse. I was able to find these at my local ACE hardware and one of two old school hardware stores in my area. One had only coarse thread in that size.Thanks much. Can anyone confirm the 80mm length? I have to order a couple of things from McMaster and will get these as well?